Acne coming back!

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So back when I was in my early teens I had terrible acne. So my doctor prescribed me the pill to help with it. It definitely cleared up and i rarely had breakouts. I am 20 now and have been on it for years. But lately it’s coming back bad. It’s terrible on my chin. It’s inflamed and bad. I’m not sure what the cause is. Is my body used to the birth control? Is it the mask-acne? I wash my face everyday with the cerave sa cleanser, use the ordinary niacinamide, and then cetaphil moisturizing lotion. Any recommendations or advice?